Mickey,

My experience has shown that there is quite a velocity range where I can get my 458wm double rifle to shoot well, using different powders and bullets. Still if you hot rod the loadings then the rifle will not shoot well. Seems a self limiting problem, at least for those who care how their rifles shoot and can shoot well enough to see the results of their loading efforts.

It would be easier to hot rod any flanged NE round since the cases just invite more powder. But again, hot rodding will result in poor shooting.

A PH I hunt with in Zimbabwe uses hot rodded 470 rounds for his hunting. He's pushing 500gr Woodleighs at 2250fps. The rifle shoots to the sights with the barrels converging at about 25yds, which is fine for the hear and now issues he occasionally encounters. And he doesn't do much shooting while hunting. So far no problems, but his is a special situation I think.

JPK